How do i move on after being dumped out of the blue?

did any of those friends actually hear your side of what happened, or did they just disappear after hearing his version?

Oh, my heart completely breaks for you reading this. I am so, so incredibly sorry you are going through this right now. To have a breakup happen completely out of the blue is shocking enough, but to have it happen right before major milestones like your prom and graduation is just a level of unfairness that nobody deserves.
​Please hear me when I say this: You are worthy of love, kindness, and genuine friendship, and you do not deserve to be treated this way.
​When a partner completely changes overnight, cuts off communication, and immediately targets your social circle, it is a reflection of their issues, not your worth. Because you are in the thick of the shock right now, it can help to understand the psychology behind why people do this, so you can see that it isn't about anything you did wrong.
​Understanding the Behavior
​When dealing with an unhealthy or toxic dynamic, breakups rarely follow a normal, healthy path. Here is what is likely happening behind the scenes:
​The Overnight Personality Shift: You mentioned he turned into a "different person." In toxic dynamics, a partner can switch from loving to completely cold in an instant. They often struggle to remember that someone has good qualities when they are upset, so they switch you from "all good" to "all bad" to protect their own ego.
​Forceful No-Contact as a Weapon: While choosing "No Contact" can be a healthy tool for healing, using it as an abrupt, aggressive block out of nowhere is actually a form of the silent treatment. It is designed to leave you frozen, confused, and desperate for closure, keeping all the power in their hands.
​The Smear Campaign & "Flying Monkeys": Turning mutual friends—especially your best friend—against you is a classic textbook tactic. They rush to control the narrative so they don't have to face accountability or look like the "bad guy." In psychology, the people who get manipulated into taking the toxic person's side are called "flying monkeys." It hurts terribly when a best friend falls for it, but it just means they are being fed intense manipulation and half-truths before you've even had a chance to breathe.
​How to Protect Yourself and Reclaim Your Peace
​Right now, your nervous system is likely in survival mode. Moving on isn't about forgetting overnight; it's about taking back your power step by step.
​Take Back Your Narrative: You cannot force people who choose to believe a lie to see the truth. If mutual friends are willing to drop you without even hearing your side or checking on you, they are showing you their lack of capacity for real, protective friendship. Do not waste your precious energy trying to defend yourself to people who are choosing to misunderstand you. Lean hard into family or outside friends who truly know your heart.
​Reclaim Your Milestones: Prom and graduation belong to you and your hard work. Don't let his behavior steal your joy or overshadow your accomplishments. If attending these events with that specific social circle feels too painful for your mental health, create your own parallel celebrations. Get dressed up with people who love you, take beautiful photos, go to a favorite dinner, and celebrate your achievement on your own terms.
​Shift Focus from "Why" to "What Now": Searching for closure from someone who blocks you and smears your name is a trap. Your closure is his behavior. The fact that he could treat you this way is all the information you need to know about his character.
​Tools that Can Help You Heal
​I am currently going through my own breakup recovery, and it is completely normal to seek outside support at the end of a relationship. It is a sign of strength, not weakness! Here are a few resources that have been a lifeline for me, and might be for you, too:
​Professional Support: It would be incredibly helpful to reach out to a counselor or therapist right now. Having a professional help you unpack and process what you're going through with both the breakup and the friend group gives you a safe, unbiased space to heal. (This app also has great breakup coaches you can look into!)
​An Online Course: I recently did an online course called Breakup Bootcamp by Amy Chan, and it was so helpful for navigating the initial shock and rewiring my perspective.
​Validation in Books: If you want to research the signs of an unhealthy relationship to make sense of what happened, I highly recommend these books (and if you aren't much of a reader, they are all available as audiobooks on Spotify!):
​It's Called a Breakup Because It's Broken by Greg Behrendt
​Why Does He Do That? by Lundy Bancroft
​It's Not You by Dr. Ramani Durvasula
​You are surviving a psychological storm right now, but the storm will clear. Be incredibly gentle with yourself. You are going to rebuild a circle of people who truly have your back.
​I am so, so proud of you for graduating and going to prom despite everything. You have earned this moment! What color is your prom dress? How do you plan on wearing your hair? Do you have other friends or family in your life that you can turn to for support right now?

i got blindsided too and watching mutual friends drift away right after felt like a second breakup. two weeks is still SO fresh, i'd barely stopped checking my phone at that point